Question

Find the least number of four digit which is a perfect square.​

Answer 1

Answer:

9801

Step-by-step explanation:

9801

Answer 2

Answer:

1024

Step-by-step explanation:

31 × 31=961

32 × 32 =1024

33 × 33 =1089

34 × 34 =1156

Least number of four digits = 1000.

(32)square is more than 1000 by 24.

So, the least number to be added to 1000 is 24.

1000 + 24 = 1024

Therefore, the smallest four digit number which is a perfect square is 1024.

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